ZIP Code: 21778 - ROCKY RIDGE, MD
ZIP Code 21778 is assigned to ROCKY RIDGE, MD. In addition to basic details, this page includes the full ZIP+4 Codes and address information for ZIP Code 21778. You can also find related data, such as nearby ZIP Codes and other relevant geographic details.
ZIP Code 21778 Basic Information
| State | County | City | ZIP Code |
|---|---|---|---|
| MD - Maryland | Frederick County | ROCKY RIDGE | 21778 |
21778 ZIP+4 Code List
ZIP Code 21778 includes many ZIP+4 Codes. Each ZIP+4 Code corresponds to a specific address or group of addresses. Below is a complete list of all ZIP+4 Codes within ZIP Code 21778, along with their associated addresses. You can also find a 9-digit ZIP Code by entering a full address.
| ZIP+4 Code | Address |
|---|---|
| 21778-0001 | PO BOX 1 (From 1 To 60), ROCKY RIDGE, MD |
| 21778-0061 | PO BOX 61 (From 61 To 120), ROCKY RIDGE, MD |
| 21778-8500 | 9701 (From 9701 To 9799 Odd) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8501 | 12900 (From 12900 To 12998 Even) LEGORE BRIDGE RD, ROCKY RIDGE, MD |
| 21778-8502 | 9700 (From 9700 To 9798 Even) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8504 | 9600 (From 9600 To 9698 Even) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8505 | 9501 (From 9501 To 9599 Odd) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8506 | 9500 (From 9500 To 9598 Even) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8507 | 9401 (From 9401 To 9499 Odd) LONGS MILL RD, ROCKY RIDGE, MD |
| 21778-8508 | 9400 (From 9400 To 9498 Even) LONGS MILL RD, ROCKY RIDGE, MD |
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Post Office in ZIP Code 21778
ROCKY RIDGE is the only post office in ZIP Code 21778. You can find the address, phone number, and interactive map below. Click to view the service and service hours about ROCKY RIDGE.
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ROCKY RIDGE Post Office
Address 13516 MOTTERS STATION RD, ROCKY RIDGE, MD, 21778-9998
Phone 301-271-4920
*Lot Parking Available
How to write a U.S. envelope?
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First, you need to fill in the recipient's mailing information in the center of the envelope. The first line is the recipient's name, the second line is the street address with a detailed house number, and the last line is the city, state abbr, and ZIP Code.
Second, write the sender's information on the left top corner of the envelope. If your mail cannot be delivered, it will return to the sender's address.
Finally, don't forget to stick the stamp on the right top corner. Otherwise, the letter will not go into the delivery process.
Here is the envelope example below.
What does each digit of ZIP Code 21778 stand for?
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The first digit designates a national area, which ranges from zero for the Northeast to nine for the far West.
The 2-3 digits represent a sectional center facility in that region.
The last two digits designate small post offices or postal zones.
Random Address in ZIP Code 21778
ZIP Code 21778 has 305 real random addresses, you can clicking the picture below to get random addresses in ZIP Code 21778.
ZIP Code 21778 Map
This is the online map of ROCKY RIDGE, Frederick County, Maryland. You can use the controls to move around and zoom in or out. Map information is for reference only.
Nearby ZIP Codes to 21778
Nearby ZIP Codes include 21775, 21759, 21727, 21757, and 21788. These ZIP Codes are located within approximately 25 kilometers of ZIP Code 21778. The listed distances are approximate and provided for reference only.
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